18027891

素因数分解:

$3^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{4271}}^1$

素因数の和:4351

約数の個数: 24

約数和(自身を含む): 30211584

約数和(自身を除く): 12183693

約数列:

[1, 3, 7, 9, 21, 63, 67, 201, 469, 603, 1407, 4221, 4271, 12813, 29897, 38439, 89691, 269073, 286157, 858471, 2003099, 2575413, 6009297, 18027891]

約数ペア:

[(1, 18027891), (3, 6009297), (7, 2575413), (9, 2003099), (21, 858471), (63, 286157), (67, 269073), (201, 89691), (469, 38439), (603, 29897), (1407, 12813), (4221, 4271)]